Sorry Johnny. There's really not a way to see the list that are using your default. It's just all that do not have a price list assigned.

I can see that you have quite a few price lists and quite a few galleries, so it might be something that would be helpful to you. We have a great forum for you to request things like that. It's here: http://feedback.smugmug.com/forums/17723-smugmug

Post it there so our team, as well as other customers can see your suggestions or requests and vote on and/or comment on them. It really helps give us to see what you all want, more easily.